|
Densitometric progression ('raw' data) |
||||||
| Mean ± SD |
Baseline |
Follow-up |
Change from baseline |
t |
p value |
Annual change |
|
|
||||||
| WL Perc15 (HU) |
-939.09 ± 33.44 |
-946.16 ± 29.26 |
-7.06 ± 8.97 |
-6.64 |
< 0.0001 |
-3.53 |
| WL VI-950 (%) |
15.08 ± 10.63 |
17.75 ± 11.35 |
2.67 ± 3.34 |
6.74 |
< 0.0001 |
1.34 |
| WL VI-910 (%) |
36.29 ± 18.28 |
40.48 ± 18.06 |
4.18 ± 5.14 |
6.86 |
< 0.0001 |
2.09 |
|
WL, whole lung; Perc15,15th percentile point (measured in Hounsfield Units); SD, standard deviation; VI-950, voxel index at a threshold of -950HU (measured in %); VI-910, voxel index at a threshold of -910HU (measured in %); annual change, change in outcome measure without adjustment for lung volume. | ||||||
Parr et al. Respiratory Research 2008 9:21 doi:10.1186/1465-9921-9-21 |
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